PETG (polyethylene terephthalate glycol) is a type of plastic that is widely used in the packaging industry due to its properties such as transparency, strength, and resistance to chemicals. It is often used in the production of containers and packaging materials for a variety of products, including cosmetics, food, and beverages. PETG is a highly versatile material that can be molded into a variety of shapes and sizes, making it suitable for a wide range of packaging applications. In the case of YC-X11 PETG clear cream jars with gold caps, the jars are made of PETG and have gold-colored caps, which can give the packaging a luxurious and high-end appearance. These jars are commonly used for packaging various types of cream-based products, such as lotions, creams, and ointments.